FAMILY v.— ACRIDIIN.4i;. 205 



pansion below, broadly and shallowly sulcate below the 

 ocellus, punctate; eyes moderately prominent, short, not a 

 great deal longer than broad. Pronotum sub-equal, the 

 metazona expanding somewhat, the disk of the prozona 

 sometimes very feebly tumid, the median carina distinct and 

 sharp on the metazona, less prominent but distinct on ante- 

 rior half of the prozona, still less distinct between the sulci. 

 Prosternal spine rather long, conical as seen from the side, 

 bluntly cylindrical as seen from the front, a very little re- 

 trorse. Tegmina at least reaching (female) or distinctly 

 surpassing (male) the hind femora, absolutely free from 

 maculation, the narrowest apical portion about half as 



Fig. 131. — Melanoplus differentialis, male. Original. 



broad as the broadest sub-basal portion. Fore and middle 

 femora of male heavily buliate, the hind femora stout and 

 rather short, moderately tumid, generally fulvo-testaceous, 

 sometimes flavo-testaceous beneath, the outer face with al- 

 ternate, fulvo-testaceous and black, narrow, equal fish-bone 

 markings, the black rarely interrupted in the middle, the 

 upper inner face with small basal and large median and 

 post-median black patches, the genicular arc black on both 

 inner and outer sides; hind tibise yellow or fulvous, with a 

 post-basal narrow black annulus, the spines black to their 

 very base, ten to eleven, rarely twelve, in number in 

 the outerseries. Extremity of male abdomen as shown in 

 Fig. 130, and the sexes in Figs. 131 and 132. 



Length of body, male, 39 mm., lemale, 41 mm,; anten- 

 nae, male, 18 mm., female, 16 mm.; tegmina, male, 32 

 mm., female, 34.5 mm,; hind femora, male, 20 mm., female, 



